Razor-sharpening machine.



R. C. McCALEB.

RAZOR SHARPENING MACHINE.

APPLICATION men nzczzs, 191s.

Patented June 118, 19158x 2 SHEETSSHEET l.

Attorneys R. C. McCALEB.

RAZOR SHARPENING MACHINE. APPLICATION FILED DEC.26. I916.

2 SHEETS-SHEET 2.

Witnesses All Attorneys Patented June 18, M18.

TtUhlERT COLIFAX MOGMEB, 01? CHICAGO, ILLTN 01S.

RAfiOm-SHARPENTNG- MACHINE.

naeaaai.

Specification or Eetters Patent.

Patented dnne 1a, 121%.

Application filed December as, rare. sen-a1 no. reacts.

To all whom a may concern."

lie it known that 1, ROBERT C. MCCALEB, a citizen of the United States,residing at Chicago, in the county of Cook and State of lllinois, haveinvented a new and useful Razor-Sharpening Machine, of which thefollowing is a specification.

' The device forming the subject matter of this application is adaptedto be employed for sharpening razors, and one object of the invention isto provide novel means whereby rotation is imparted from one of thestropping rolls to the other.

Another object of the invention is to provide novel means for moving theblade holder so that it will cooperate successively with the respectiverolls.

llt is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the presentinvention appertains.

With the above and other objects inview which will appear as thedescription proceeds. the invention resides in the combi nation andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the accompanying drawings Figure 1 shows in top plan, a sharpeningmachine constructed in accordance with the present invention;

Fig. 2 is a side elevation of the structure I shown in lFig. 1;

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Fig. 3 is an end elevation;

Fig. 1 is an elevation showing the opposite end of the structure fromthat delineated in Fig. 3;

ll ig. 5 is a section onthe line 5-5 of ri a.

Fig. 6 is a cross section taken through the machine.

Tn the drawings ,the numeral 1 indicates a base plate on which areerected standards 2 and 3. The base plate 1 carries, for the purpose ofillumination, a lamp 28. Disposed he'tween the standards 2 and 3 aretapered rollers 1 provided with spiral sharpening bands whichmay be madeof leather or. any suitable material adapted to have. a stropping actionon the blades. The spiral bands 5 mesh into each other, and-the bands,therefore, constitute not only a sharpening means, but means wherebyrotation may be imparted from one of the rollers 4: to the other, whenone roller is rotated. At their wider ends, the rollers 1 arecircumscribed by friction bands 6 which engage each other. The frictionbands 6 may be made of rubber or a like material. The friction bandsconstitute a means, independent of the spiral bands 5, whereby oneroller may be rotated from the other. The rollers 4 are mounted onshafts 7 journaled in the standards 2 and 3.

Erected on the base plate 1 near to the standard 2 is a supplementalbearing 8 carrying a stub shaft 9 on which -is journaled a wheel 10provided with a friction facing 11 engaging the friction band 6 of oneof the rollers 4. The wheel 10 carries a pin 12 mounted to move in aslot 1 1 fashioned in an upright arm 15 f'ulcrumed intermediate its endsas shown at 16 on the standard 2. A similar arm 17 is fulcrumed on thestandard 3, the arm 17 being considerably shorter than the arm 15, inview of the fact that an actuating means, repre sented by the wheel 10and attendant parts, is operatively connected with the arm 15, Whereasnosuch actuating means is connected with the arm 17. The arms 15 and 17are connected by a blade holder 18 of any desired construction. Theblade holder 18 operates between the tapered rollers 1;.

A tank 19 is mounted on the base plate 1 adjacent the standard 3. Theshafts 7 of the rollers 4 project through the tank 19, and the shaft ofone roller may be supplied with a crank 20, whereby the said roller maybe rotated. It is not necessary, however, that the rollers be handactuated, and any mechanical equivalent for the crank 20 may besubstituted, whereby the device may be driven from a motor. Extendedpart way across the tank 19 horizontally is a partition 21 provided atits ends with upright supports .22 which project toward grinding rolls25 secured to the shafts 7 and located within the tank 19. The tank 19contains a quantity of water indicated at 23. The lower ends of wicks241 dip into the water. The wicks 21 pass upwardly between the supports22 and the walls of the tank 19 and rest on or overhang the grindingrolls 25. Tn the end wall of the tank 19 there is an opening 26 disposedabove'the partition 21. The numeral 27 denotes a razor which may bethrust through the opening 26 on topof bands onthe wider ends of therollers engage with each other. From the friction band 6 of one of therollers 4, rotation will be imparted to the wheel 10. When the wheel 10is rotated, the pin 12 in the wheel moves in an orbit and, cooperatingwith the slot 14 in the arm 15, imparts a rocking or swinging movementto the said arm, on its fulcrum 16, the blade holder 18 which is carriedby the arms 15 and 17, being swung first toward one of the taperedrollers 4, and thentoward the other of the tapered rollers. The bladewhich is carried by the holder 18, therefore, is presented alternatelyto the rollers 4. It is to be observed that the rollers exert a downwardaction on the blade in the holder 18, thereby stropping the blade. It isto be understood that a blade-carrying means of any kind may beassembled with the holder 18, so that the device can be used to sharpensafety razor blades of any kind. I am aware of the fact a specific bladeholding means, adapted to retain a safety razor blade cannot be claimedin the same application with the sharpening mechanism herein-disclosed,and therefore I have shown or described no specific means whereby safetyrazor blades may be assembled with the holder 18. v

When it is desired to grind a razor blade, the blade, indicated at 27,is pushed inwardly through the opening 26 in the outer end wall of thetank 19. The ed e of the blade then is engaged by the grin ing rolls 25,these rolls exerting a downward grinding action on the blade. The water23 in the tank 19 is absorbed by the wicks 24 and is delivered onto-thegrinding rolls 25, in a manner which will be obvious from Fig. 5.

The blade holder 18 is disposed parallel to the line of contact betweenthe rollers 4, and, since the rollers 4 taper, the abrasive surfaces ofthe rollers engage the blade in the holder 18 at a slight slant, givinga slant sharpening stroke to the blade and imparting the necessary fineand microscopic saw edge to the blade. 7

Having thus described the invention, what is claimed is 1. In a deviceof the class described, a supporting structure; a pair of taperedrollers Journaled 0n the supporting structure to rotate in contact, andprovided with intermeshing spiral abrading elements; and a blade holdermounted between the rollers to swing in a direction transverse to theaxes of the rollers, the blade holder being disposed in the plane of theline of contact between the tapered rollers.

'2. In a device of the class described, a base; standards mounted on thebase; arms mounted to swing on the standards; a blade holder connectedwith the upper ends of the arms and operating between the rollers;interengaged friction members on the rollers; a supplemental bearingupstanding from the base; a friction wheel journaled on the bearing andengaging the friction member of one of the rollers; a projection on thewheel, the lower end of one of the arms being provided with a slotwherein the projection is slidably received; and means for rotating oneof the rollers.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

ROBERT COLFAX MCCALEB.

Witnesses W. Loser, FRED BEATY.

